Hi, guys. Sorry for a little off.
Is there any economical profit in early 2019 to upgrade media workflow performance of my 4.2 5820k on asus x99 to one of hifreq. 269x xeon v3 cpu`s ?
Will i miss (how much) overall gaming perf with 1080ti at 1440p 144hz on 3.3-3.6 xeon ?
Or its better to change a whole platform to ... what ?
There is never "economic profit" with PC's unless you are actually getting paid to do something with it. If you are basically asking whether you can upgrade your CPU for cheap, keep all your other stuff and still have a decent gaming machine, then yes.. with caveats. Even with a 269x xeon overclocked, it will never have the gaming framerates a newer model lower core high clocked chip will. It will however do "computational work" related tasks much better though simply because of the core count.
So for comparison I have a E5-2699 v3 on an Asrock Extreme6 x99, 128GB ECC DDR4 and a GTX1080. It is OC'd to 3.7Ghz on all cores. If running heavy load on all the cores, it will drop down to 2.8-3.2, and there's no way around that because 18 cores is simply too many to keep at 3.7 under that load. It performs wonderfully stuff like processing video, etc, however it will not match the benchmark high frame rates of some of my other 4-6 core 4.4 OC'd machines with the same vid card. Does that matter about not matching the frame rates of my other systems? Nope. All the games "I" play run awesome on the plain ol' GTX 1080 (not Ti) so I don't feel the need to upgrade anything. In everyday use this really shines. NOTHING seems to slow it down (128GB RAM doesn't hurt either). I can be playing my games, 100 tabs open, and crunching video in the background without issue and it has been reliable as hell, which becomes much more important to me these days.
Your 5820K@4.2 should be no slouch for gaming regardless. Your not going to get better gaming from a slower Xeon proc, even if it has more cores and a bigger cache so if computational loads are not something you do, why bother? Even if you go to the latest and greatest CPU/MB, are there any current games that are NOT performing well enough on the 5820K 1080Ti @ 1440p resolution? I could see if you want to go to 4K res, but a 5820K @4.2 and a 1080Ti is not a weak combo for gaming at 1440p.